﻿body,
html { height: 100%; font-family: "Helvetica Neue", "Hiragino Sans GB", "Segoe UI", "Microsoft Yahei", 微软雅黑, Tahoma, Arial, STHeiti, sans-serif; font-weight:400; }

body { display: -webkit-box; display: -ms-flexbox; display: flex; margin: 0; padding: 0; background-color: #446072; color: white; -webkit-box-pack: center; -ms-flex-pack: center; justify-content: center; -webkit-box-align: center; -ms-flex-align: center; align-items: center; -webkit-box-orient: vertical; -webkit-box-direction: normal; -ms-flex-direction: column; flex-direction: column; overflow: hidden; }

h1 { margin-top: 2rem; }
a { text-decoration:none; }

.shelf { position: relative; width: 30rem; height: 14rem; border: 0.5rem solid #374d5b; border-radius: 0.5rem; background-color: rgba(255, 255, 255, 0.1); -webkit-perspective: 130rem; perspective: 130rem; box-shadow: inset 0 0 2rem rgba(0, 0, 0, 0.2); }

.door { position: absolute; width: 14.8rem; height: 14rem; display: -webkit-box; display: -ms-flexbox; display: flex; box-sizing: border-box; padding: 1rem; background-color: #374d5b; -webkit-box-align: center; -ms-flex-align: center; align-items: center; box-shadow: 0 1px 1px rgba(0, 0, 0, 0.3); outline: 1px solid transparent; }

.door::before { width: 1.5rem; height: 1.5rem; border-radius: 50%; background-color: rgba(0, 0, 0, 0.1); content: ""; }

.door.left { border-radius: 0 0.75rem 0.75rem 0; -webkit-box-pack: end; -ms-flex-pack: end; justify-content: flex-end; -webkit-animation: leftDoorOpen 3.5s ease-out forwards 1s, leftDoorFlap 15s linear infinite forwards 9s; animation: leftDoorOpen 3.5s ease-out forwards 1s, leftDoorFlap 15s linear infinite forwards 9s; -webkit-transform-origin: 0 0 0; transform-origin: 0 0 0; }

.door.right { right: 0; border-radius: 0.75rem 0 0 0.75rem; -webkit-animation: rightDoorOpen 3s ease-out forwards 1.5s, rightDoorFlap 10s linear infinite forwards 8s; animation: rightDoorOpen 3s ease-out forwards 1.5s, rightDoorFlap 10s linear infinite forwards 8s; -webkit-transform-origin: 100% 0 0; transform-origin: 100% 0 0; }

.book { position: absolute; box-sizing: border-box; padding: 0.8rem 4rem 0.8rem 2rem; border-radius: 0.25rem; background-color: rgba(255, 255, 255, 0.1); color: white; font-size: 1rem; text-transform: uppercase; letter-spacing: 0.1rem; cursor: pointer; box-shadow: inset 0 0 0.75rem rgba(255, 255, 255, 0.1); }

.book.home-page { -webkit-transform: rotate(-90deg) translate(-12.4rem, 3rem); transform: rotate(-90deg) translate(-12.4rem, 3rem); -webkit-transform-origin: 0; transform-origin: 0; }

.book.about-us { -webkit-transform: rotate(-100deg) translate(-13.4rem, 6.1rem); transform: rotate(-100deg) translate(-13.4rem, 6.1rem); -webkit-transform-origin: 0; transform-origin: 0; outline: 1px solid transparent; }

.book.contact { right: 2rem; bottom: 0.2rem; border-radius: 0.3rem 0 0 0.3rem; }

.book.faq { right: 0.8rem; bottom: 3.3rem; border-radius: 0.3rem 0 0 0.3rem; }

.book.not-found { width: 12rem; height: 3.5rem; border: 1px dashed rgba(255, 255, 255, 0.3); background-color: transparent; -webkit-transform: rotate(-90deg) translate(-12rem, 13rem) scale(1); transform: rotate(-90deg) translate(-12rem, 13rem) scale(1); -webkit-transform-origin: 0; transform-origin: 0; cursor: default; -webkit-animation: bookFadeOut 1s 3s infinite forwards; animation: bookFadeOut 1s 3s infinite forwards; }

.book.not-found::after { display: block; width: 10rem; padding-left: 5rem; background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='80' height='30'><path fill='rgb(255, 255, 255)' d='M7.688,3.737C6.1,10.409,4.624,16.982,2.475,23.517c-0.424,1.29,0.724,2.338,1.957,1.916 c5.879-2.021,11.743-4.107,17.409-6.696c1.246-0.572,0.443-2.366-0.815-1.932c-3.856,1.333-7.695,2.69-11.565,3.959 c2.879-2.526,5.485-5.215,9.013-7.17c4.441-2.459,9.299-4.109,14.281-4.915c10.903-1.772,22.052,0.562,31.979,5.04 c9.241,4.162,12.895,8.725,13.164,4.942c0.121-1.69-5.57-4.953-14.125-8.714C53.19,5.292,41.094,3.539,29.636,6.058 c-7.122,1.567-16.708,5.374-22.064,11.544c1.359-4.455,2.461-9.028,3.032-13.563C10.852,2.091,8.12,1.927,7.688,3.737z'/></svg>"); background-repeat: no-repeat; background-size: 4rem; background-position: left center; font-family: "Dancing Script"; text-transform: lowercase; font-size: 25px; content: "this page can't be found"; -webkit-transform: rotate(90deg) translate(6rem, -1rem); transform: rotate(90deg) translate(6rem, -1rem); opacity: 0.3; }

.book:hover:not(.not-found) { background-color: rgba(255, 255, 255, 0.2); }

@-webkit-keyframes leftDoorOpen {
    60% { -webkit-transform: rotateY(-115deg); transform: rotateY(-115deg) }
    100% { -webkit-transform: rotateY(-110deg); transform: rotateY(-110deg) }
}

@keyframes leftDoorOpen {
    60% { -webkit-transform: rotateY(-115deg); transform: rotateY(-115deg) }
    100% { -webkit-transform: rotateY(-110deg); transform: rotateY(-110deg) }
}

@-webkit-keyframes rightDoorOpen {
    60% { -webkit-transform: rotateY(125deg); transform: rotateY(125deg) }
    100% { -webkit-transform: rotateY(120deg); transform: rotateY(120deg) }
}

@keyframes rightDoorOpen {
    60% { -webkit-transform: rotateY(125deg); transform: rotateY(125deg) }
    100% { -webkit-transform: rotateY(120deg); transform: rotateY(120deg) }
}

@-webkit-keyframes rightDoorFlap {
    0% { -webkit-transform: rotateY(120deg); transform: rotateY(120deg) }
    5% { -webkit-transform: rotateY(125deg); transform: rotateY(125deg) }
    15% { -webkit-transform: rotateY(117deg); transform: rotateY(117deg) }
    25% { -webkit-transform: rotateY(123deg); transform: rotateY(123deg) }
    30% { -webkit-transform: rotateY(120deg); transform: rotateY(120deg) }
    100% { -webkit-transform: rotateY(120deg); transform: rotateY(120deg) }
}

@keyframes rightDoorFlap {
    0% { -webkit-transform: rotateY(120deg); transform: rotateY(120deg) }
    5% { -webkit-transform: rotateY(125deg); transform: rotateY(125deg) }
    15% { -webkit-transform: rotateY(117deg); transform: rotateY(117deg) }
    25% { -webkit-transform: rotateY(123deg); transform: rotateY(123deg) }
    30% { -webkit-transform: rotateY(120deg); transform: rotateY(120deg) }
    100% { -webkit-transform: rotateY(120deg); transform: rotateY(120deg) }
}

@-webkit-keyframes leftDoorFlap {
    0% { -webkit-transform: rotateY(-110deg); transform: rotateY(-110deg) }
    5% { -webkit-transform: rotateY(-115deg); transform: rotateY(-115deg) }
    15% { -webkit-transform: rotateY(-107deg); transform: rotateY(-107deg) }
    25% { -webkit-transform: rotateY(-113deg); transform: rotateY(-113deg) }
    30% { -webkit-transform: rotateY(-110deg); transform: rotateY(-110deg) }
    100% { -webkit-transform: rotateY(-110deg); transform: rotateY(-110deg) }
}

@keyframes leftDoorFlap {
    0% { -webkit-transform: rotateY(-110deg); transform: rotateY(-110deg) }
    5% { -webkit-transform: rotateY(-115deg); transform: rotateY(-115deg) }
    15% { -webkit-transform: rotateY(-107deg); transform: rotateY(-107deg) }
    25% { -webkit-transform: rotateY(-113deg); transform: rotateY(-113deg) }
    30% { -webkit-transform: rotateY(-110deg); transform: rotateY(-110deg) }
    100% { -webkit-transform: rotateY(-110deg); transform: rotateY(-110deg) }
}

@-webkit-keyframes bookFadeOut {
    50% { border: 1px dashed rgba(255, 255, 255, 0.1); }
}

@keyframes bookFadeOut {
    50% { border: 1px dashed rgba(255, 255, 255, 0.1); }
}
